Question

在NavigationController和tabBarController下有3个UIViewControllers。

按下这样的viewControllers：A-＆gt; B-＆gt; C

在viewController C中，添加以下代码以允许用户从照片库中选择图像。

func btnClicked() {
    let imagePickerController = UIImagePickerController()
    imagePickerController.sourceType = .photoLibrary
    imagePickerController.delegate = self
    self.present(imagePickerController, animated: true, completion: nil)
}


func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage{
       topIamge.image = image
    }

    picker.dismiss(animated: false, completion: nil)

}

问题是用户选择图像或取消选择后，再按左侧栏按钮返回B，出现错误Unbalanced calls to begin/end appearance transitions for，如果继续返回A，则打印出错误试。

我做错了吗？

P.S。如果我按下后退按钮而不显示UIImagePickerController，则没有错误。

THX。

Answer 1

我确定它与UIImagePickerController无关检查以下解决方案 https://stackoverflow.com/a/12230777/6131436

https://stackoverflow.com/a/20925686/6131436

在NavigationController和tabBarController下使用UIImagePickerController时出错

1 个答案: